1. Product Overview
ABB REF620E_F NBFNAAAANDA1BNN1XF is a member of the ABB Relion™ series, specifically designed for the protection, control, measurement and monitoring of modern power systems. It is a highly integrated digital protection device that can provide reliable fault detection and isolation functions in complex power distribution networks.
2. Key Parameters
Overall Dimensions: Approximately 71mm × 99mm × 55mm.
Operating Environment: It has a wide operating temperature range (-40°C to +70°C), suitable for various environments.
Power Supply Requirement: Usually uses 24V DC power supply.
Hardware Configuration: Equipped with a powerful Cortex-A9 processor, 256MB DDR3 memory and 4GB Flash storage.
3. Product Features
Multi-Frequency Admittance Earth Fault Protection: The device integrates multi-frequency admittance earth fault protection function, with high sensitivity and high selectivity, which can accurately detect and handle earth faults.
Advanced Communication Capabilities:
Protocol Support: Supports various industrial communication protocols such as IEC 61850 (including redundant HSR and PRP), Modbus, DNP3, IEC 60870-5-103.
Time Synchronization: Supports IEEE 1588 v2 Precision Time Protocol (PTP) to ensure accurate time synchronization in distributed systems.
Flexible Installation Method: Supports DIN rail or panel mounting to adapt to different on-site needs.
Easy Maintenance: The modular design makes installation, commissioning and maintenance more convenient, supporting on-site rapid fault location and parameter configuration.
4. Structure and Composition
CPU Module: Responsible for core control and calculation (such as NBFNAAAANDA1BNN1X).
Communication Module: Provides communication interfaces with other devices or upper computers.
I/O Module: Used to receive measurement signals such as current and voltage, and output control commands.
5. Application Fields
Power Distribution Network: Used for feeder protection in public power distribution networks, especially suitable for radial, ring and mesh power grids.
Industrial Facilities: Widely used in power distribution protection in industrial fields such as metallurgy, petroleum, chemical industry, electronic manufacturing.
Public Utilities: Suitable for places with extremely high requirements for power supply reliability, such as data centers, power plants.
6. Installation and Maintenance
Installation: The device is compactly designed, supports DIN rail or direct panel mounting, and is suitable for rapid integration into existing power distribution rooms or cabinets.
Maintenance:
Remote Diagnosis: Supports remote monitoring and fault diagnosis through Modbus or IEC 61850 protocols, reducing the need for on-site maintenance.
On-site Commissioning: Equipped with a user-friendly LCD display interface, which is convenient for on-site engineers to set parameters and monitor status.
